Correct answer
C. Repair and maintenance charges
Explanation
The correct answer is Repair and maintenance charges.
Heating of ________ to 120°C, produces plaster of paris?
For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by________?
Soluble silica present in boiler feed water can be removed by________?
The controlling resistance in a rotary drum vacuum filter is the ________ resistance?
The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is________?
________ mixer is used for devulcanisation of rubber scrap & making water dispersion & rubber solution?